ZERO LIQUID DISCHARGE, ZLD

Increasing water stress, tightening discharge regulations, and rising operational costs are driving industries toward high-recovery, closed-loop water systems. Zero Liquid Discharge (ZLD) is not merely an environmental solution, it is an advanced engineering strategy for process optimization and resource efficiency.

KEY PERFORMANCE INDICATOR

Water Recovery Rate

• 90–99% total system recovery

Discharge Performance

• Zero Liquid
• Controlled solid phase via crystallization and dewatering
• Minimized regulatory and compliance risk

Recovered Water Quality

• Tailored water quality based on process requirements

Energy & Operational Efficiency

• Optimized specific energy consumption
• Integrated heat recovery strategies
• High-efficiency evaporator design
• Reduced chemical consumption through advanced pre-treatment

Concentrate Management

• Volume minimization of RO reject streams
• High-solids-tolerant evaporation systems
• Scaling and fouling control strategies
• Optimized sludge and crystallized salt handling

WATER CIRCULARITY: PROCESS SECURITY & RESILIENCE

Water circularity is not only a sustainability objective it is an operational risk management strategy. High-recovery systems transform wastewater from a liability into a strategic production resource.

• Reduced freshwater dependency
• Secured production continuity in water-stressed regions
• Elimination of discharge penalty risks
• Improved ESG and sustainability performance metrics
• Long-term CAPEX / OPEX optimization

THE AVEKA ENGINEERING APPROACH
A successful ZLD implementation is not about selecting standalone equipment, it is about integrated process engineering. Comprehensive water balance and mass balance analyses are critical at the design stage. Systems must be engineered not only for current loads but also for future capacity expansion and process variability.Our ZLD solutions are built on:

• Process-specific customized design
• Energy-efficient equipment selection
• Advanced concentrate minimization strategies
• Extended membrane lifetime optimization
• Data-driven operational cost control
• Automation and SCADA integration
• Real-time performance monitoring